#include "muduo/net/TcpServer.h"
#include "muduo/net/EventLoop.h"
#include "muduo/net/TcpConnection.h"
#include "muduo/net/Buffer.h"
#include <iostream>
#include <string>
#include <unordered_map>

class DictServer
{
public:
    DictServer(int port)
        :_server(&_baseloop, muduo::net::InetAddress("0.0.0.0",port), "DictServer", muduo::net::TcpServer::kReusePort)
    {
        // 设置连接事件的回调
        _server.setConnectionCallback(std::bind(&DictServer::onConnection, this, std::placeholders::_1));
        // 设置连接消息的回调
        _server.setMessageCallback(std::bind(&DictServer::onMessage, this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3));
    }

    void start()
    {
        // 先开启监听
        _server.start();    
        // 再启动死循环事件监控
        _baseloop.loop();
    }

private:
    void onConnection(const muduo::net::TcpConnectionPtr& conn)
    {
        if(conn->connected())
        {
            std::cout << "连接建立成功" << std::endl;
        }
        else
        {
            std::cout << "连接建立失败" << std::endl;
        }
    }

    void onMessage(const muduo::net::TcpConnectionPtr& conn,  muduo::net::Buffer* buffer, muduo::Timestamp)
    {
        static std::unordered_map<std::string, std::string> dict = {
            {"hello", "你好"},
            {"world", "世界"},
            {"apple", "苹果"}
        };

        std::string str = buffer->retrieveAllAsString();
        std::string res;

        auto it = dict.find(str);
        if(it == dict.end())
        {
            res = "未知单词";
        }
        else
        {
            res = it->second;
        }

        conn->send(res);
    }

private:
    muduo::net::EventLoop _baseloop;
    muduo::net::TcpServer _server;
};

int main()
{
    DictServer server(9090);
    server.start();
    return 0;
}